Home / 11,731.32-17,590.68-5,149.80

Finding the Fourth Proportional to 11,731.32, 17,590.68 and 5,149.80

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Solution

The fourth proportional to 11,731.32, 17,590.68 and 5,149.80 is: 7,721.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,731.32 : 17,590.68 = 5,149.80 : x
  2. Step 2: Convert to fraction form
    11,731.32/17,590.68 = 5,149.80/x
  3. Step 3: Cross multiply
    11,731.32x = 17,590.68 × 5,149.80
  4. Step 4: Simplify right side
    11,731.32x = 90,588,483.86
  5. Step 5: Solve for x
    x = 90,588,483.86/11,731.32
  6. Step 6: Final answer
    x = 7,721.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.